By Alan Carter
September 11, 1989 12:00 PM

>MTV AWARDS TV’s hottest smart aleck of the moment is actor-comic-talk show host Arsenio Hall. Not only does his syndicated program constitute a real threat to Carson, but Hall also finds himself in demand these days. Arsenio is hosting the MTV Video Music Awards, and no doubt he will be his typically irreverent self. Such artists as Paula Abdul. Bobby Brown, Madonna and Jon Bon Jovi are expected to perform. MTV (Wed., Sept. 6, 9-11:30 P.M. ET)

OPEN HOUSE If you haven’t caught this new Fox show, do so. It’s especially funny. And actor Danny Gans (who plays mealymouthed real estate agent Scott Babylon) is this season’s most likely breakout character so far. Fox (Sundays. 9:30 P.M. ET)